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Biology · Principles and Processes in Biotechnology

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In 1972, Stanley Cohen and Herbert Boyer constructed the first artificial recombinant DNA molecule by isolating an antibiotic resistance gene from a native plasmid of which organism?

  1. Escherichia coli
  2. Salmonella typhimurium
  3. Agrobacterium tumefaciens
  4. Haemophilus influenzae

Correct answer · Option 2

Salmonella typhimurium

Explanation

Cohen and Boyer accomplished the construction of the first artificial recombinant DNA in 1972 by isolating the antibiotic resistance gene from a native plasmid of Salmonella typhimurium.

Related questions

Match List-I with List-II: \n List-I List-II A ampR and tetR in pBR322 I Protein involved in plasmid replication B rop II Selectable markers C ori III Recognition site for BamH I D Tetracycline gene IV Origin of replication \n Choose the correct answer from the options given below:→Which of the following vectors is naturally disarmed and modified to deliver genes of interest into a variety of dicotyledonous plants?→Match List-I with List-II: List-I List-II A Elution I Process of taking up recombinant DNA into host B Transformation II Extraction of DNA bands from agarose gel C Palindromic sequence III Sequence reading same forward and backward D Cloning IV Making multiple identical copies of DNA Choose the correct answer from the options given below:→Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Plasmids and bacteriophages are widely used as cloning vectors in recombinant DNA technology. Reason (R): Plasmids and bacteriophages have the ability to replicate within bacterial cells independent of the control of chromosomal DNA. In the light of the above statements, choose the correct answer from the options given below:→
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